| 词汇 | exodermis |
| 释义 | exodermis noun[ S ] biology specializeduk /ˌek.səˈdɜː.mɪs/ us /ˌek.səˈdɝː.mɪs/ a layer of cells in a plant's root underneath the epidermis(= outer layer): （植物根部的）外皮层 The exodermis is thought to protect against water loss from the root to the soil.人们认为，外皮可以防止水分从根部流失到土壤中。 The cells of the exodermis are very compact, restricting the flow of water. The exodermis is a single-cell layer at the outer surface of the root directly below the root epidermis. The exodermis of a one-year-old root is often flaking and falling off. Parts of plants axil bark bilobed blade bulb caning cascara sagrada corolla endodermis inflorescence knot pistil rosella seed coat seed pod sessile shaw sting taproot tubule |
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